Space Science

Artist’s conception of NASA’s Space Launch System

Escape Velocity

Why do a baseball and a rocket need the same launch speed to get from Earth into space? It has to do with physics and gravitational force.
Milky Way galaxy as seen from Australia (Brett Ritchie via Unsplash)

The Milky Way

In 2019, scientists discovered that our galaxy, the Milky Way, is not the shape they thought it was. How do astronomers use astronomical distance to understand the shapes of galaxies?
NASA’s Fermi Gamma Ray Space Telescope helps us see gamma rays, which humans cannot see with the naked eye. This image shows gamma rays from the Milky Way. Source: NASA via Wikimedia Commons

Gamma Rays: Helper or Hazard?

Gamma rays might make you think of cancer, harmful radiation or superheroes. But gamma rays have lots of uses: food safety, manufacturing and even medicine!